[RE-wrenches] kilovault 2400 HLX Lithium Battery Charging.....

[Jim Gowdy]

Thanks for all the input.  I'm going to the client's house today and see
what he's got.

On Wed, Dec 31, 2025 at 12:08 PM Starlight via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hi Darryl, Quote: "When a cell in the battery reaches full charge the
> circuit bypasses that cell”
>
> Not exactly. The BMS balance circuit reduces current (example 300ma) to
> any cell that has reached the balance voltage setting (example 3.55v) while
> other lower SoC cells in series continue charging.
>
> If a cell reaches the over voltage protection limit (about 3.8V for LFP),
> the BMS will disable all current flow. All batteries in series with this
> battery will stop charging due to the open circuit BMS. This can quickly
> cause a series battery bank to become out of balance. A battery balancer
> like Victron is very effective in preventing this.
>
>
>
> Larry Crutcher
> Starlight Power Systems
>
>
>
> On Dec 31, 2025, at 11:30 AM, Darryl Thayer via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> I hope I am responding correctly.  Each battery has a built-in circuit
> that is called a top balancer.  When a cell in the battery reaches full
> charge the circuit bypasses that cell with a top balance current making the
> whole battery drop to that top balance current.  any battery connected in
> series with that battery is forced to that current, such that it will have
> to charge at the top balance current of the first battery to go to top
> balance current.  best thing is to use a 48 volt lithium battery.  If you
> must use these batteries use a good battery balancer, Victron is the best
> but still not as a 48 volt battery.
>
> On Wed, Dec 31, 2025 at 12:01 PM Jay via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>>
>> Hi jim
>>
>> As you have 4 battereis in series, you should use balancing devices
>> between them. The kilovaukt are very susceptible to getting out of balance
>> between batteries.
>>
>> I had to work with a customer to fix his kilovault battereis. Numerous
>> failures which was traced back to broken balancers.
>>
>> Victron make good ones.
>>
>> Jay
>>
>>
>> > On Dec 30, 2025, at 9:39 PM, Jim Gowdy via RE-wrenches <
>> re-wrenches at lists.re-wrenches.org> wrote:
>> >
>> > 
>> > Does anyone have any experience with the Kilovault 2400 HLX 12v
>> batteries.  I have a customer that wants to hook up a generator to his
>> system and go over programming on an outback system.  I looked up this
>> battery company and they don't have a website and their phone number didn't
>> work so I assume the company is out of business.  I found a manual and the
>> specs state that the bulk charge time is 2 minutes per battery I assume.
>> I'm still a rookie and learning the proper charging parameters for
>> different kinds of batteries so any help would be appreciated.  He hasn't
>> given me much info, but apparently there are......
>> > -8 batteries on a 48v system.  I assume the batteries are 2 strings of
>> 4 batteries.
>> >
>> > -Outback FXR 30/48 inverter
>> >
>> > -Outback FM Charge Controller.  He didn't say what size, but the
>> assumption is 80a
>> >
>> > -MATE 3 controller
>> >
>> > -Solar....not known at the moment
>> >
>> > -Gasoline powered 120v output portable generator.....KW is unknown at
>> the moment.  *I don't like this, but it's what the customer bought.
>> >
>> >
>> > --
>> > Jim with Gowdy Electric
>> > Cambria, Ca 93428
>> > business  805 927 2630
>> > cell  805 975 5279
>> > _______________________________________________
>> > List sponsored by Redwood Alliance
>> >
>> > Pay optional member dues here: http://re-wrenches.org
>> >
>> > List Address: RE-wrenches at lists.re-wrenches.org
>> >
>> > Change listserver email address & settings:
>> > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>> >
>> > There are two list archives for searching. When one doesn't work, try
>> the other:
>> > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
>> > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>> >
>> > List rules & etiquette:
>> > http://www.re-wrenches.org/etiquette.htm
>> >
>> > Check out or update participant bios:
>> > http://www.members.re-wrenches.org
>> >
>> _______________________________________________
>> List sponsored by Redwood Alliance
>>
>> Pay optional member dues here: http://re-wrenches.org
>>
>> List Address: RE-wrenches at lists.re-wrenches.org
>>
>> Change listserver email address & settings:
>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>
>> There are two list archives for searching. When one doesn't work, try the
>> other:
>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>
>> List rules & etiquette:
>> http://www.re-wrenches.org/etiquette.htm
>>
>> Check out or update participant bios:
>> http://www.members.re-wrenches.org
>>
>> _______________________________________________
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
>
> List Address: RE-wrenches at lists.re-wrenches.org
>
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> There are two list archives for searching. When one doesn't work, try the
> other:
> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> http://www.re-wrenches.org/etiquette.htm
>
> Check out or update participant bios:
> http://www.members.re-wrenches.org
>
>
> _______________________________________________
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
>
> List Address: RE-wrenches at lists.re-wrenches.org
>
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> There are two list archives for searching. When one doesn't work, try the
> other:
> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> http://www.re-wrenches.org/etiquette.htm
>
> Check out or update participant bios:
> http://www.members.re-wrenches.org
>
>

-- 
Jim with Gowdy Electric
Cambria, Ca 93428
business  805 927 2630
cell  805 975 5279
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20260101/2041c19c/attachment.htm>